Rubicon Technology, Inc. (RBCN) stock slumped 14.13 percent to $10.45 in aftermarket trading session. The company reported fourth quarter net profit of $0.04 per share compared to $0.64 per share in the same quarter a year-ago and against analysts’ estimation of $0.07 per share.

For the first quarter, the company expects net loss to be in a range of $0.10 to $0.14 per share on revenues of $8 to $12 million compared to analysts’ estimation net profit of $0.11 per share on revenues of $2.9 million.

Crocs, Inc. (CROX) stock slumped 11.61 percent to $18.05 in aftermarket trading session as its first quarter earnings outlook fell short of expectations. The company expects first quarter earnings to be in a range of $0.24 to $0.26 per share on revenues of 263 to $268 million, while analysts’ expect the company to report quarterly net profit of $0.30 per share on revenues of $268.74 million. Its fourth quarter net profit rose to $5.57 million or $0.06 per share from $4.73 million or $0.05 per share in the same quarter last year.

Deckers Outdoor Corp. (DECK) stock slumped 10.81 percent to $80.46 in aftermarket trading session. The company expects first quarter earnings is to be about $0.25 per share on revenues of $243.8 million compared to analysts’ estimation of $0.63 per share on revenues of $263.25 million. Its fourth quarter net profit rose to $124.73 million or $3.18 per share from $89.23 million or $2.27 per share in the same quarter a year-ago.

Celldex Therapeutics, Inc. (CLDX) stock plunged 5.96 percent to $4.10 in post market trading session. The company announced that it is offering shares of its common stock in an underwritten public offering.

MercadoLibre, Inc. (MELI) stock declined 5.67 percent to $91.50 in post market trading session. The company reported fourth quarter net profit of $21.61 million or $0.47 per share compared to $15.94 million or $0.36 per share in the same quarter a year-ago, but fell short of analysts’ estimation of $0.51 per share.

PLX Technology, Inc. (PLXT) stock fell 4.96 percent to $3.45 in aftermarket trading session. Its fourth quarter adjusted net los widened to $2.3 million or $0.06 per share from $1.1 million or $0.02 per share in the same period a year-ago.

UTi Worldwide Inc. (UTIW) stock declined 4.1 percent to $15.45 in aftermarket trading session. The stock has a 52-week low of $11.94, a 52-week high of $24.05 and $1.66 billion in market capitalization.

Century Aluminum Co. (CENX) stock declined 4.01 percent to $10.30 in post market trading session. The company swung to fourth quarter net loss of $31 million or $0.35 per share compared to $60 million or $0.64 per share in the same quarter a year-ago.